Cyclopentadiene (CPD) is oxidized by copper(II) bromide and chloride in alcohol solutions to form dialkoxy- and haloethers and exhibits a higher reactivity than butadiene. Dialkoxy-, chloroalkoxy-, and dichlorocyclopentenes are formed from CPD and CuCl2 Without catalysts. The reaction selectivity (yield of ethers calculated per Consumed CuBr2) reaches 98%. The characteristic feature of the oxidation mechanism is the parallel formation of all reaction products through a common intermediate (presumably, the bromonium cation) and bromine-containing carbocationic intermediates.